intro the var-dumper component
review effect
Reduce line length
doc for Dumpers
split intro/advanced sections
use VarCloner instead of Php/ExtCloner
Reworded a misleading Doctrine explanation
move Dumper section above the Caster one
Fixed typo
[reference][configuration][security]Added key_length for pbkdf2 encoder
section for DebugBundle/Twig integration
§ about Data::getLimitedClone()
§ about DebugBundle config
minor adjustments
how to dump as string note
Added interlinking between the 2 best practices
Reverted removal of version

It seems like this one was missed when reverting the change. For the
discussion, see #4290
Improved and fixed twig reference
[Config] Complete security encoder in full default configuration

Added bcrypt and plaintext encoder
more accurate doc about limits